Madrid, Spain's central capital, is a city of elegant boulevards and expansive, manicured parks such as the Buen Retiro. It’s renowned for its rich repositories of European art, including the Prado Museum’s works by Goya, Velázquez and other Spanish masters. The heart of old Hapsburg Madrid is the portico-lined Plaza Mayor, and nearby is the baroque Royal Palace and Armory, displaying historic weaponry. The city is located on the Manzanares River in the centre of both the country and the Community of Madrid (which comprises the city of Madrid, its conurbation and extended suburbs and villages). The population of the city is almost 3.1 million with a metropolitan area population of around 6.5 million. Madrid is considered one of the top European destinations concerning art museums. Best known is the Golden Triangle of Art, located along the Paseo del Prado and comprising three museums. There are many other world class museums and art galleries in Madrid. In the year 2006 Madrid was the fourth most visited city in Europe and the first of Spain, with almost seven million tourists. The nightlife in Madrid is one of the city's main attractions. Tapas bars, cocktail bars, clubs, jazz lounges, live music venues, flamenco theatres, and establishments of all kinds cater to all.